5-Formylisoxazole-3-carboxylic acid CAS 221173-23-5
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 221173-23-5 |
| Molecular Formula | C5H3NO4 |
| Molecular Weight | 141.08 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 5-Formylisoxazole-3-carboxylic acid (CAS 221173-23-5), a pharmaceutical standards reference standard manufactured under ISO 17034 accreditation. Molecular formula: C5H3NO4. Molecular weight: 141.08 g/mol. Batch-specific COA and technical support are available on request.
Physical & Chemical Properties
| Molecular Formula | C5H3NO4 |
| Molecular Weight | 141.08 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 2020 |
| Nitrogen Atoms | 1 |
Related Formylisoxazole Standards
Recommended Standards
- 4-Hydroxy-5-nitropyrimidine (CAS 219543-69-8)
- 5-Nitro-2H-pyran-2-one (CAS 22682-11-7)
- 2-Nitropyrimidin-5-ol (CAS 345642-85-5)
- (3-(Diethylcarbamoyl)-5-nitrophenyl)boronic acid (CAS 871332-82-0)
- Tebuconazole (CAS 107534-96-3)
- 1-Ethyl-1H-imidazo[4,5-b]pyridin-2(3H)-one (CAS 448211-19-6)
- 2-(6-Chloro-2-methoxypyridin-3-yl)acetic acid (CAS 1261633-42-4)
- (2-Bromophenyl)(2,2-difluoroethyl)sulfane (CAS 1026796-99-5)
- 1,3,5-tri(1H-Imidazol-1-yl)benzene (CAS 528543-96-6)
- Semaglutide Impurity 180 (CAS CATO-C4X-2226180)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 13829788188 / jacky.chen@cato-chem.com